RecruitingPhase 2Drug trialMechanisms of Cannabidiol in Persons With MS: the Role of Sleep and Pain PhenotypeThe purpose of this research study is to compare the effects of cannabidiol (CBD), tetrahydrocannabinol (THC), or both, on sleep and pain in persons with multiple sclerosis (MS). Little is known about how CBD and/or THC may help sleep, reduce pain, or perhaps even treat pain through better sleep.